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+  Rockbox Technical Forums
|-+  Installation / Removal
| |-+  Manual Installation
| | |-+  Archos - Installation/Removal/Flashing
| | | |-+  Distortion via Line-Out
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Author Topic: Distortion via Line-Out  (Read 5197 times)

Offline NewYorkArchos

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Distortion via Line-Out
« on: December 19, 2007, 12:42:07 PM »
Hello,
I recently installed Rockbox on my old Archos Stuido 20 after installing a new HHD into it after the stock drive died.

I placed a Samsung 40gb 5400 RPM ATA-6 drive in it and it seemingly works Okay.  The Rockbox firmware installed just fine as well and everything on the surface seems to be running smoothly.

I only use this device via the Line-out patch to a mixer at my workplace and I get some irritating distortion through the line-out now.  I have flatted the Bass and Treble and have confirmed I am not pre-amping the device at the mixer.  At first I installed the RB version 2.5 and then last night changed the install to the latest daily build.

I am still hearing distortion, especially in the bass.  The distortion increases to an un-listen-able amount after a few hours.  My suspicion is that the device is getting hotter than it did with the old Hitachi 4200 RPM drive.  The outside of the device does not feel hotter.  Actually it feels cooler now than previously.

The next thing I will try is simply uninstalling RBJ and see if it's still there with the stock firmware.  I would, of course, MUCH prefer to use RBJ with my Studio 20 (32)!

Is there anything else I could try to stop the distortion short of using the stock firmware?  Thanks for your time and the wonderful software.

Nelson
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Offline NewYorkArchos

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Re: Distortion via Line-Out
« Reply #1 on: December 20, 2007, 11:26:47 AM »
I have confirmed the distortion issue is with Rockbox only and does not occur with the Stock Firmware.  Version 5.08.

Is there simply a .cfg file I can alter a line in?

Thanks for any help.
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Offline Llorean

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Re: Distortion via Line-Out
« Reply #2 on: December 20, 2007, 11:50:06 AM »
Have you checked all of the sound settings to make sure the sound isn't be altered at all, and output is definitely at 0db?
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Offline NewYorkArchos

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Re: Distortion via Line-Out
« Reply #3 on: December 20, 2007, 04:08:07 PM »
Yes I confirmed the volume was set to zero as well as flatted the Bass and Treble.  I also set Bass and Treble to -8dB as well.  They didn't seem to have much affect since I am listening to the Line-out.

Thanks for replying.
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Offline Llorean

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Re: Distortion via Line-Out
« Reply #4 on: December 20, 2007, 04:33:46 PM »
If I recall the Archos units have other sound altering settings as well, not just Bass and Treble, though I'm only sure of this on the Recorder.
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Offline NewYorkArchos

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Re: Distortion via Line-Out
« Reply #5 on: December 20, 2007, 04:44:12 PM »
Are you suggesting I alter the Archos Firmware settings prior to installing Rockbox?  Is there an addition occuring between the 2 Firmware's sound settings?  I am using only the Line-Out from the the device and these setting have little affect on the output.

As mentioned, the device sounds great stock.  I'm listening to some trip-hop with booming bass that would sound like the Ramones using Rockbox as I had it.  Even after decreasing the volume to zero as well as the Bass and Treb filters.  I did read the Rockbox manual and found only those pre-amp settings (Bass & Treb, et al.)

Do the previous settings from the stock firmware affect Rockbox?  

Thanks again for your input.
« Last Edit: December 20, 2007, 04:46:37 PM by NewYorkArchos »
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| | | |-+  Distortion via Line-Out
 

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